<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

    <div id="app">

       <button @click="show=!show">点我啊</button>

        <!-- if主要是对标签的存在做判断处理 -->
       <h1 v-if="show">if == 看到我</h1>

       <!-- show主要是对标签的隐藏显示做判断处理 -->
       <h1 v-show="show">show == 看到我</h1>

    </div>

</body>

<script src="../node_modules/vue/dist/vue.js"></script>

    <script>
        let vm =  new Vue({
            el: "#app",
            data: {
                show:true
            }
        });

        
        
    </script>
</html>